Agoraphobia/Fear of Throwing Up

I've struggled with agoraphobia for about 6 years now, though I'm sure I would have gotten it under control (even a little bit) if I had known what was wrong in the beginning. Every single time I was in a car, or a building that wasn't my own house, I became nauseous, and would have to get outside ASAP. I never threw up though. Only in the past year or so did I realize that, yes, I have agoraphobia, but it is mostly fueled by my fear of throwing up. I didn't even identify my fear of throwing up until the past couple of years. What I've figured out is this: I have digestive troubles that, along with my anxiety of throwing up, make me nervous and nauseous. This is worsened when my agoraphobia comes in to play. However, I am now on anti-anxiety medication, and am currently working on the medical side of my digestive issues. What I want to know is, does anyone else have this same problem? And if you do, what do you do to cope? I feel like I'm so alone in this, and thatI've spend the last several years missing out on fun activities (and struggling through university) all because of this.